The gauges go to appropriate levels at starting, then - in unison - the temp, oil pressure and fuel level all slowly go to zero, then head back up some then head back down some, etc. If it weren't al...

I have a 1976 280z and none of my gauges work. I can't tell speed, revs, oil
pressure/temperature. I have a fuel cell so I'm not worried about the gas gauge, but any
help I could get on the others w...